Milling-machine.



PATENTBD JULY 28, 1908.

R. K. LB BLOND & W. F. GROENE.

MILLING MACHINE.

APPLIOATIOE 2mm JULY 10. 1901.

WITNESSES:

A T'I'ORNE Y.

ism jee'tingti om celumn, iB

.J'EST AVAlLABLE or...

pump straras RICHARD K. LE BLOND AND WlLLlAM l GROENE, ()l CINCINNATI, OHIO, ASS

R. K. LE BLOND MACHINE TOOL COMPANY, OF CINCINNATI, OHIO. ACOh,

OHIO.

melee axes.

To all whom it ma/y concern:

Be it known'that we, RICHARD K. LE Bnoun and WILLIAMF. GROENE, both citizens of the United States of America, and residents of Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Milling-Machines, of which the following is a specification.

Our invention relates to improvements in millin machines. One of its objects is to provi e an attachment for milling machines whereby worm-wheels, s ur-gears, spiralgears, and the like, may lie hobbed or out while the work is rotated.

Another ob'ect is to provide ready means for effectingt e various changes in speed of the operative parts to enable a wide range of work to be operated upon.

Another object is to provide attachments which may be readily put in place and detached as required.

It further consists in certain details of form combination and arrangement, all of which will be more fully set forth in the description of the accompanying drawings, in which,

Figure 1 is a front elevation of the bedplate of a millin machine with our attachment in place. T ig. 2 is a side elevation of a millin machine partly in section on line 2-2 of *ig. 1.- Fig. 3 is a section through the work cutting head on line 'v-'v of Fi 4. Fig. 4 is a section throu h the same onfiine w-w of Fig. 1. Fig. ,5 is a section through I the same on line w-s of Fig. 4. Fig. 6 is a section on line 'yy of Fi .-2.

In the accompanying cfi'awings, A, represents the table or traveling carriage of the milling machine.

A, represents the swivel'base of the table, and A, represents the saddle. Through the swivel base, A, feed screw, A", passes, the ends of the screw bein fixed against lon itudinal movement in t e ends, a, a, of t e table, so that by the rotation of the screw, A, the table is reciprocated in the ways, a, formed inthej swivel base A.

B represents the overhanging arm roand fromwhio i is bill dly sus MILLING-MACHINE.

Specification of Letters Patent.

Application filed July 10, 1907. Serial No. 383,070.

the teeth of the gears are to be g PTENT l carried upon a mandrel, d, and one end to the spindle, d, of the .2 chine and at the opposite end joui; frame C. I d represcn ts a gear carried by thd: 1 I (I, which drives a gear, d, on that journalcd in the frame, C. E, n: gear at the opposite end of tin which meshes with a gear, (2, ca adjustable bracket, F. Brackety,

, z. upon the shaft, d, and may be suit; clamped to any desired position, of a bolt, f, passing through a slot, f

A train of gears, c, e", e, which it varied by substituting suitable char? transmits the desired number of revig. i to the gear, G, mounted upon the j? which rotates shaft, it, through have? g, 7i, carried in the housing, 9 form'mg of the frame, C.

The gear blank, I, or work to be hot; is mounted upon a mandrel, i, which ported between the tail-stock center i stationary center, i, and a rotating i carried by the spindle, I, of the travifl or dividing head. The mandrel, i, is vided with a dog, i which engaged? chuck, or face late, i, to transmit mi, to the mandrel? 'i. The blank or woi i zg be hobbed might be held upon the i spindle, I, by any of the well known mea such as by chuck, instead of being mount? between the tail stock and the spindle,

J, represents the. frame of the travcli head, which is bolted to the carriage, The stationary center, i, is carried in frame, 1', which is likewise bolted to the (n riage, Mounted on the. spindle, i, is worm-wheel, J, which receives motion from a worm sleeve, ic, journaled in the frame, J, so ig'r-y by rotatin the sleeve, It, the worm may: disengage from the worm-wheel, l. desired.

7:, represents a bolt Missing tl'irough segmental slot to lock t e sleeve, 1.1, in i? engaged or disenga ed position.

K, which is mounted in an mrccntrh iounted on the shaft of the worm, ii, is a lrel :e r T whi h sl 'tl JEST AVAlLABLti (LL/r 'ible shaft from,,theshaft, Z, and thence throu h the and L, to the worm, if, and ornr-wheel, J, to the spindle,

)f which are engaged by the carried by the bracket, 1n, so tain work spindle, I, may be ttervals and dogged, while the so. nts a tapered stud forced into opening of the spindle, I, and n, to receive a spur gear to mesh n gear, 0, on a stud, 0, similar N, the gears 'n, o, to be replaced lar chan e "ears of ditl'crcnt di- 3* secure t e desired speed. When 1, is to receive motion through n, 0, the worm, K, is thrown out of with the worm-wheel, J, and on is imparted to the spindle the gears, L, L, and the worm, K, -wheel, J, one or both of the gears detached. oration, where it is desired to cut beds, a spiral hob, D, is mounted, in Figs. 1 and 2, and the change ,0 and e arranged to give the reqmber of turns-to the gear, G, and the flexible shaft, Z, to the spindle, ate the mandrel,i, carrying the blank cut, the table, A, being lowered so that 'lank travels freely beneath the hob, l). echanism is started in motion and the A, slowly elevated until the teeth of V Orin-wheel have been cut to the dedepth. on it is desired to cut straight or spiral ears, the swivel base, A, is turned so i t 0 axis of the table is at an acute an le e vertical plane assing through tie i-holding mandrel, The table is then iprocated by means of the feed-screw, to carry the gear blank forward beneath s iral hob. The angle at which the le is set determines whether the gear will ve straight or spiral teeth. lhe mechanism herein shown and decribed is capable of considerable modification without departing from the-principle of ourinvention.

W hat, we claim is: A-milling machine havin a column, a j spindle a table, a means or feeding the 1 la and a 'vidinghead mounted upon the table in combination with a mandrel secured to the main spindle, a hob secured u on the mandrel, a otatory shaft journale in the column, change gears journaled between the j mandrel and the shaft, 0. means of holding a ear blk n th e of t ividmg carries a notched wheel, M, v

flexible shaft connecting the sccondnl r shaft and thc rotatory shaft journnlcd in the col umn. 1;

vL...A milling machine having a colunin with an over-hanging arm, a main spindlc, at

table, a means for feedim the tab 0 and n dividing head carried by the table in combi nation with a frame secured to the over-hung ing arm, a mandrel 'ournaled between the overhanging arm and the column, means of coupling the mandrel to the main spindle, n hob secured upon the mandrel, a rotnior shaft journaled in the-frame, change gca rs ca ried b the frame and connecting the lllillltl rcl and tlie rotatory shaft, a second mandrel t be mounted between the tail stock and tllu spindle of the dividing hcadand adapted to hold the gear blanks against the hob, a. secondary shaft mounted upon the table ud jacent to the spindle of the dividing head. gears connecting the secondary shaft and thc spindle of the dividin head, a flexible shaft connecting the secondary shaft and the rotatory shaft carried by the frame.

3. A milling machine having a column, a

main spindle, a table, a means or feeding the table, a dividing head and a tail stock carried by the table in combination with a nntndrcl secured to the main spindle and adapted to carry a hob, a rotatory shaft, journaldnmrings carried b the column in which said shaft is journale change gears between thqniandrcl and the shaft, a second mandrel to be carried between the tail-stock and the spindle of the cutting head and adapted to hold blanks a ainst the hob, a secondary shaft journalerf in the cutting head adjacent to the spindle of the dividing head, means for conmeeting and disconnectim the secondary shaft with the spindle of the dividing head, and a flexible shaft connecting the secondary shaft and the rotatory shaft carried by th column.

4. A milling machine havin a column, a main spindle, a table, a means fbr feeding the table, a tail stock and a dividing head in com-- bination with a mandrel secured to the main spindle and adapted to carry a hob, a rotutory shaft, journal bearings carried by the column in which said shaft is journalcd. change gears between the mandrel and thc shaft, a second mandrel to be carried between the tail-stock and the s indle of the dividing head and adapted to hoi d ear blanks a ainst the hob, a secondary shaft journaled iii the dividing head adjacent to the spindle of the dividing head, a wormear carried by cam bearin in the dividing ead adjacent to the secondar shaft and the spindle of the divid mg has for connectin and disconnecting th i'.

e he hobholing mendrel, H hefitiend'geer-wheeie ,eennectin I .I I1fid!:'p end-thejshei tyfihe eheft; mendre errweeeieeee we we lm, edepfiedfteheielthe Meek-end v v eeew'eeni thegteil stock and ihe swindle of ,the-v; heeci, a e eeeende e eiz'is meimized in'fhecfivifiingheed, e 1 Me eheieeeuplin 'g ehefiseeezedeey end the 'leteteg-yafeheftfin?the'ieeiumn, :1 were; mee'mee inf-eke: Eaeed,

neeugfling. -.zhe;seem

indie-efthejdi egf eeepteeg mareeeive iIliOElS- for putting heminfgeer wifihfl each; 1o e3 when the woem rixe'el' ie shfiifiedteqdieeeeneet teem.

6;}?Af fi1iliiiigmeehiee having e eoiumn, e1 main spindle, endie tebie'eup perted by the eelumeg exdiyidjng heed mounted neon the tebiejene meene 'xifeeding the meme, z g'eez'nbinetienfwith; e heb-eeldizeg eg meent'edinfihe eekumnenci in geer wieh the fvmeieepindim meene for meueeiee' e 'fybenkyupee the epiedle eifl e feflI-"fehenge gears, meme fer feezmeesing steeigvi f ee eei'eiheieeineieeezhe: e iem we bememe of feeding the table at: the

*ehexige geere er ith the hob-holding end the spindle of the hem diseonneetine' the change gears irem 1 holding menarel and the spindle of 5m 551g heel-d, said last nemedmeees eei: pendent of the table feed, when we speeds of the hob-holdingze the seindie of the dividing verie irreepecfizive of the move table.

'Z. A. miliing machine having V afieeie, e dlwdmg heed, a mean eembieetien with change gears egaen the column, seid change gems ic- With the main spindle, e 'fi Lory shaft wear with the change fie gear with t e spindle of the dividi meene of diseonneetin, the spied ividing heed from 'the' iexiele she e eed irrespective of the speed oi the 0?; me dl -ndmg heed. RIC Kg. LE W 1AM F. GRQEN Witnesses Y Amee :MURRAY: Renee MCCORMAQK. 

